Joan Rivers isn’t apologizing for her jokes. “If you want nice, go on Christian Singles and marry somebody,” she told us Friday at the induction of her and daughter Melissa’s Gray Line Ride of Fame bus. When asked to name the worst-dressed New Yorker, Joan told us, “Mayor Koch now. That’s an easy one.” She also had advice for Oscar’s leading ladies. While Anne Hathaway should “go away,” she was easier on Jennifer Lawrence smoking a suspicious cig. “It’s a rite of passage,” Joan said. “Having Jack Nicholson hit on you, getting a Jewish agent and getting your own drug dealer. She’s arrived.”